Two cycle internal combustion motor



May 19, 1931. A E. c. wYcKol-'F TWO-CYCLE INTERNAL COMBUSTION MOTOR Filed bct. 2. 1928 2 sheets-sheet 1 @of C, @ckoff BY A TTORNE Y.

May 19, 1931. E. c. wYcKoFF TWO-CY-CLE INTERNAL COMBUSTION lMOTOR 2 sheetssneet 2 Filed OCI'..

, INVENTR.

A TToRNEY.

Patented May 19, 1931 UNITE STATES EDG-AR G. WYCKOFF, OF CLINTON, lNE JERSEY Two CYCLE INTERNAL coMBUsTIoN MOTOR Application med october a 192s. serial No. 309,771.

This invention relates to internal combustion engines and has for its object the adoption of automatic intake valves for two cycle engines that are opened by the downward motion of the piston and the outward rush of the spent vapors of the exploded charge through outlets that are opened inthe lowest movement of said piston.

These outlets or exhaust gates are of suitable height and width to equal the diametrical area of the cylinder and are located in a sleeve or bushing surrounding the cylinder and forming part of its inner walls, the said ports communicating with an exhaust chamber that surrounds the cylinders and is provided with a suitable common outlet. This arrangement provides for the rapid expulsion of the spent charge with such speed that a sufficient absence of pressure at t ie upper end of the cylinder causes the inlet valve to open and admit a fresh supply of inflammable vapor to be compressed by the returning piston and to be fired at the appropriate moment.

These and other objects and details of the invention are more fully described in the following specification, set forth in the claims and illustrated in the accompanying drawings, wherein:

Figure 1 is a partly vertical sectional view through a six cylinder two cycle showing the invention.

Fig. 2 is a horizontal sectionalview through the line 2-2 of Fig. 1.

Fig. 3 is a similar view through line 3-3 of Fig. 1.

Fig. 4 is a vertical cross sectional view through line 4-4 of Fig. 1.

Fig. 5 is a perspective-view of the cylinder bushing.

In Fig. l will be seen the arrangement of the six cylinder engine having the shaft 10 with the fan collar 11 and the timing driving gear 12 while the cylinders are arranged above the same and the pistons 18 arranged in different positions.

The cylinders are divided midway of their length and each has a sleeve 14, best shown in Fig. 5, having near the lower edge the ports 15 that register with the interval between the cylinder sections and the exhaust chamber 16 outside thereof and which as shown in Fig. 3 extends completely around the engine frame andr the sleeves 14 whose ports l5 deliver the spent vapors therein.

Above the exhaust chamber 16 is the water jacket 17 surrounding the cylinders and the sleeves in their upper endsv and wheremost exposedto the heat, while on the cylinder frame is the head V18 having the inlet 19 for the explosive fluid and caps 2O that 'enclose the stems 21 of the inlet valves 22 and the springs 23 that surround said stems to keep the valves normally closed.

Piston 13a is shownein Fig. v1 as having reached its maximum downward movement and the ports 15a are all open to completely exhaust the'spent vapors, whichoutrush of the contents of the cylinder so vrelieves the atmospheric pressure-from beneath valve as 'to cause it to act against the tension of spring 23a and open'tov admit the hydro-carbon mixture contained within the head 18. l

The piston at the left side of the engine is at the point of the explosion of the gas and is'v about to be driven down by the force of same. The other pistons occupy the appropriate positions for the rotation of the shaft 10.

While the sleeve 14 is shown with seven ports 15 the-number may be varied to provide for a greater or less exhaust and the intervening webs between the gates afford ample bearing space for the movement of the pistons. The exhaust is finally expelled through the outlet 24 to any desired point and the area of the ports 15 is about equal to the cross section of its cylinder.

To secure effectual automatic action of the valves the stems 2l are provided with nuts 25 that confine the springs 23 and regulate their tension to permit of the opening of the valve when the internal closing force is removed.

It is obvious that the engine may be modified or altered without departing from the essential features above described or from the scope of the appended claims.

What I claim as new is 1. In a two cycle internal combustion motor, the combination of a plurality of divided cylinders surrounded by an exhaust chamber common to all the cylinders, a Water jacket above the exhaust chamber and surrounding the cylinders, exhaust valves at the top of the cylinders to aiiord communication with a common intake, and a separate and independent sleeve set in each cylinder and having ports communicating With the exhaust chamber and at the interval of the divided cylinder.

2. In a tvvo cycle internal combustion motor, the combination of a plurality of cylinders divided at their middle and surrounded by a common exhaust chamber, a Water jacket above said exhaust chamber, pistons, a sleeve set into the divided Walls of each of the cylinders to provide for the uninterruptedtravel of the piston and having ports registering with the divisions of the cylinders, and inlet valves from a common intake.

3. Inka tWo cycle internal combustion mo tor the combination of aplurality of cylinders divided to provide communicating means for a surrounding common exhaust chamber, a jacket surrounding the cylinders and uniting the sections of the divided cylindersfa sleeve vin each Cylinder uniting its ends and Wh'ose Walls constitute the bearing surface for pistons and having ports at the space between the divided cylinders, and intake valves.v

4f. Ina two cycle internal combustion motor, the combination of cylinders each comprising a sleeve and a base section of the cylinders and a head section of the cylinders united by the sleeve, the base section having an exhaust chamber common to all the cylinders, exhaust valves in the head, and a Water jacket above the exhaust chamber.

In testimonywhereof I hereunto affix my signature.

n. o'. WYCKOFF. 

